Creep is the phenomenon of deformation of a material under a constant load over time. It is significant in structural engineering because it can cause the material in a structure to sag or stretch over time, leading to potential failure or collapse of the structure. Creep is particularly important in concrete and metal structures, as these materials are often used in long-span applications and structures that are expected to last for decades or even centuries. Engineers must take creep into consideration when designing and constructing structures to ensure their safety and longevity. Materials that are resistant to creep, such as some advanced composite materials, are often used in high-stress applications to mitigate the effects of this phenomenon.
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